Free deadline calculator

UNCITRAL arbitration deadline calculator

Time limits under the UNCITRAL Arbitration Rules (ad hoc) rules, encoded from the rules themselves with the citation, period, trigger and roll-over treatment for each. Pick a seat in the calculator below to compute a due date on that seat's real weekend and public-holiday calendar.

2013 (with 2010 Rules) edition in force from 2013-04-01 · 2021 edition in force from 2021-06-25 · Expedited 2021 edition in force from 2021-09-19 · Methodology

Keep the England and Wales civil defaults and go straight to what happened, or change the jurisdiction and forum first.

Jurisdiction

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Cited to the rule

UNCITRAL deadlines this calculator covers

17 encoded time limits, version-stamped to their rule edition.

Response to the Notice of ArbitrationUNCITRAL Arbitration Rules (2013), Art. 4(1)

30 days from Receipt of the Notice of Arbitration

Binding2013 (with 2010 Rules) editionRolls over on the recipient's calendar

Response to the Notice of ArbitrationUNCITRAL Arbitration Rules (2021), Art. 4(1)

30 days from Receipt of the Notice of Arbitration

Binding2021 editionRolls over on the recipient's calendar

Agree on / request designation of the appointing authorityUNCITRAL Arbitration Rules (2021), Art. 6(2)

30 days from Receipt by a party of another party's proposal to designate the appointing authority

Binding2021 editionRolls over on the recipient's calendarVerify against the rules

Respondent appoints the second arbitrator (three-member tribunal)UNCITRAL Arbitration Rules (2021), Art. 9(1)

30 days from Receipt of notification of the other party's appointment of an arbitrator

Binding2021 editionRolls over on the recipient's calendar

Agree on the sole arbitrator before referral to the appointing authorityUNCITRAL Arbitration Rules (2021), Art. 8(1)

30 days from Receipt by all parties of a proposal for the appointment of a sole arbitrator

Binding2021 editionRolls over on the recipient's calendar

Two arbitrators choose the presiding arbitrator before appointing-authority defaultUNCITRAL Arbitration Rules (2021), Art. 9(3)

30 days from The appointment of the second arbitrator

Binding2021 editionRolls over on the recipient's calendarVerify against the rules

Send notice of challenge of an arbitratorUNCITRAL Arbitration Rules (2021), Art. 13(1)

15 days from Notification of the appointment of the challenged arbitrator, or awareness of the circumstances (if later)

Binding2021 editionRolls over on the recipient's calendar

Refer an unresolved challenge to the appointing authorityUNCITRAL Arbitration Rules (2021), Art. 13(4)

30 days from The date of the notice of challenge

Binding2021 editionRolls over on the recipient's calendar

Render the final award — no fixed time limit under the main RulesUNCITRAL Arbitration Rules (2021), Arts. 33-34

0 days from Close of the proceedings (no numeric deadline; the Tribunal acts without undue delay)

Advisory2021 editionNo weekend or holiday roll-overVerify against the rules

Request interpretation of the awardUNCITRAL Arbitration Rules (2021), Art. 37(1)

30 days from Receipt of the award

Binding2021 editionRolls over on the recipient's calendar

Request correction of the awardUNCITRAL Arbitration Rules (2021), Art. 38(1)

30 days from Receipt of the award

Binding2021 editionRolls over on the recipient's calendar

Tribunal corrects the award on its own initiativeUNCITRAL Arbitration Rules (2021), Art. 38(2)

30 days from The date of communication of the award

Binding2021 editionNo weekend or holiday roll-over

Request an additional award (omitted claims)UNCITRAL Arbitration Rules (2021), Art. 39(1)

30 days from Receipt of the termination order or the award

Binding2021 editionRolls over on the recipient's calendar

Response to the Notice of Arbitration (Expedited)UNCITRAL Expedited Arbitration Rules (2021), Art. 4

15 days from Receipt of the Notice of Arbitration

BindingExpedited 2021 editionRolls over on the recipient's calendar

Hold the first case management conference (Expedited)UNCITRAL Expedited Arbitration Rules (2021), Art. 12

15 days from The constitution of the arbitral tribunal

BindingExpedited 2021 editionNo weekend or holiday roll-over

Render the award (Expedited) — base six-month periodUNCITRAL Expedited Arbitration Rules (2021), Art. 16(1)

6 months from The constitution of the arbitral tribunal

BindingExpedited 2021 editionNo weekend or holiday roll-over

Render the award (Expedited) — nine-month long-stopUNCITRAL Expedited Arbitration Rules (2021), Art. 16(2)-(3)

9 months from The constitution of the arbitral tribunal (maximum extended period)

BindingExpedited 2021 editionNo weekend or holiday roll-over

Time limits at a glance

The headline periods below restate the encoded rules. Run the calculator above for the exact date on the seat's calendar.

Response to the Notice of Arbitration: what is the time limit under the UNCITRAL rules?

30 days from Receipt of the Notice of Arbitration, under UNCITRAL Arbitration Rules (2013), Art. 4(1) (2013 (with 2010 Rules) edition). The period rolls over on the recipient's calendar.

Response to the Notice of Arbitration: what is the time limit under the UNCITRAL rules?

30 days from Receipt of the Notice of Arbitration, under UNCITRAL Arbitration Rules (2021), Art. 4(1) (2021 edition). The period rolls over on the recipient's calendar.

Respondent appoints the second arbitrator (three-member tribunal): what is the time limit under the UNCITRAL rules?

30 days from Receipt of notification of the other party's appointment of an arbitrator, under UNCITRAL Arbitration Rules (2021), Art. 9(1) (2021 edition). The period rolls over on the recipient's calendar.

Agree on the sole arbitrator before referral to the appointing authority: what is the time limit under the UNCITRAL rules?

30 days from Receipt by all parties of a proposal for the appointment of a sole arbitrator, under UNCITRAL Arbitration Rules (2021), Art. 8(1) (2021 edition). The period rolls over on the recipient's calendar.

Send notice of challenge of an arbitrator: what is the time limit under the UNCITRAL rules?

15 days from Notification of the appointment of the challenged arbitrator, or awareness of the circumstances (if later), under UNCITRAL Arbitration Rules (2021), Art. 13(1) (2021 edition). The period rolls over on the recipient's calendar.

Keep exploring

Other arbitration institutions

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Institution

UNCITRAL Arbitration Rules (ad hoc) deadlines, encoded from the institution's rules with their citations. Choose the seat (which sets the weekends and public holidays), the date the clock started, and the deadline. Confirm the exact rule edition before relying on a date.

Seat of arbitration

Drives the holiday calendar and the seat-law deadlines below.

When did the clock start? (trigger date)

Which deadline?

Receipt of the Notice of Arbitration.

After the award

Court deadlines under the seat law (United Kingdom (England & Wales))

These run under the law of the seat, not the institutional rules, and must be tracked separately. They are computed from the date of the award; confirm the seat and dates with counsel.

Challenge / appeal the award (England & Wales)

Date of the award (or, for awards on/after 1 Aug 2025, the "applicable date" under the Arbitration Act 2025)

28 days

Arbitration Act 1996 s.70(3)

Limitation to enforce the award (England & Wales)

The cause of action to enforce accrues

6 years

Limitation Act 1980 s.7

Legal disclaimer

Deadline Engine provides calculated dates based on procedural rules. It is not legal advice. You must independently verify every deadline against the underlying rules and the facts of your matter. Deadline Engine accepts no liability for missed deadlines.